Chemistry Gibbs Free Energy Solution: A BaSO4 slurry is ingested before the gastrointest...

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Solution: A BaSO4 slurry is ingested before the gastrointestinal tract is x-rayed because it is opaque to x-rays and defines the contours of the tract. Ba2+ ion is toxic, but the compound is nearly insoluble. If ΔG° at 37°C (body temperature) is 59.1 kJ/mol for the dissolution,   BaSO4(s) ⥫⥬ Ba2+(aq) + SO42−(aq)what is [Ba2+] in the intestinal tract? (Assume that the only source of SO 42− is the ingested slurry.)